Fabrication of g-C3N4 Nanosheets Anchored With Controllable CdS Nanoparticles for Enhanced Visible-Light Photocatalytic Performance.

Minggui Wang,Min Wang,Jie Han,Fang Peng,Xiaohuan Sun

doi:10.3389/fchem.2021.746031

Abstract

Herein, g-C3N4/CdS hybrids with controllable CdS nanoparticles anchoring on g-C3N4 nanosheets were constructed. The effects of CdS nanoparticles on photocatalytic H2 production and organic molecule degradation for g-C3N4/CdS hybrids were investigated. The maximum rate of H2 production for g-C3N4/CdS sample was 1,070.9 μmol g−1 h−1, which was about four times higher than that of the individual g-C3N4 nanosheet sample. The enhanced photocatalytic performance for prepared hybrids could be mainly attributed to the following causes: the formed heterojunctions can contribute to the light absorption and separation of photogenerated electrons and holes, the two-dimensional layered structure facilitates the transmission and transfer of electrons, and high specific surface area could provide more exposed active sites.

Highlights

Semiconductor materials have received widespread attention as promising photocatalysts for clean energy production and environmental problems. (Tong et al, 2012; Chang et al, 2016; Yu et al, 2017; Qi et al, 2018; Cao et al, 2019; Ng et al, 2021)
In order to optimize the photocatalytic performances of g-C3N4/CdS hybrids, some important factors should be taken into account, such as effective contact between two components, well-controlled morphology structure and particle size, and sufficiently exposed reactive active sites
The synthesis processes of g-C3N4/CdS hybrids are shown in Scheme 1

Summary

Introduction

Semiconductor materials have received widespread attention as promising photocatalysts for clean energy production and environmental problems. (Tong et al, 2012; Chang et al, 2016; Yu et al, 2017; Qi et al, 2018; Cao et al, 2019; Ng et al, 2021). In order to optimize the photocatalytic performances of g-C3N4/CdS hybrids, some important factors should be taken into account, such as effective contact between two components, well-controlled morphology structure and particle size, and sufficiently exposed reactive active sites.

Results

Conclusion